Responsive web design is one of the most significant advances in web design. But what about your type? Just changing floats and widths isn't enough. We have to look at screen size, relative proportion, device norms and compatibility in order to best present our design and convey its meaning and intent across devices and screen sizes. We'll look at how typographic scale changes across screen sizes, talk about measurement units and which ones work best, and discuss @font-face works and what tricks are being used by font services to serve your fonts faster. The technology is here, and so is the browser support. There's just no excuse for bad typography on the web!